阴极的

The reasons that the research of NEA photo-electric cathode in our country lags greatly behind the other foreign countries which possess the advanced technologies mainly lie in the following facts: besides the lack of enough investment in this field and the draggle of relative technique on the NEA , t...

我国NEA光电阴极的研究距离国外先进水平差距较大，寻其原因除了资金投入不足，相关技术落后等因素外，缺乏对每一环节有效的测试分析手段和监测控制方法是制约我国阴极发展缓慢的一个重要原因。

At the same time, the electron energy distribution of NEA photocathode has been calculated. In chapter 3, the development of the dynamic spectral response measurement system is introduced in detail.

根据国内外NEA光电阴极的研究现状，提出了国内在NEA光电阴极研制方面存在的问题，阐述了本文的研究背景和意义。

The thermionic emission properties of rare earth doped molybdenum cathode and impregnated cathode with sub-micron scandia doped tungsten matrix, and the secondary emission property of rare earth doped molybdenum cathode have been studied in this paper.

研究了稀土钼阴极的热发射、次级发射及亚微米结构钪钨基扩散阴极的热发射性能。

The spectral response performance of transmission-mode GaAs photocathode after high-temperature activation and low-temperature activation was measured by the use of on-line spectral response measurement technology, and the integral sensitivity and spectral response performance parameters of the GaAs photocathode after high-temperature activation and low-temperature activation were compared.

利用在线光谱响应技术，对透射式GaAs光电阴极在高温激活和低温激活后的光谱响应特性进行了测试，计算并比较了高温激活和低温激活后阴极的积分灵敏度和光谱响应特性参数。

As a nondestructive technique to measure the inner fine structure of the cathode, the ICT has the unique advantage. We discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by Richardson formula and Muller's computational model.

就当前钡钨阴极发射机理的两个主要理论模型作了自己的探讨，并初探了钡钨阴极中钡的供应机制及发射寿命预测的问题，而且用理查逊公式的推导和Muller计算机模拟法解释了混合基钡钨阴极的优良性能。

The TiB2 cathode coating was tested in existing 190kA prebake cells.

3在现行190kA预焙铝电解槽上进行了TiB_2涂层阴极的工业生产试验，考核在用焦粒焙烧所产生的热量制备TiB_2涂层阴极的过

It is advisable to decrease the humidifying level of anode gas when operating at high current density to avoid two-phase flow in cathode so as to improve mass transfer.

故PEMFC在小电流密度工作时，应该使阳极气体充分增湿；而在大电流密度工作时，应该适当降低阳极的增湿程度以降低阴极两相流的机会，从而改善阴极的传质状况。

Third, a simplified mathematical model is specially developed to study the effect of flow field structure on performance of PEM fuel cell with interdigitated flow field.

提高电池阴极和阳极的增湿温度都会增加阴极的淹没程度，但是前者的影响程度较之后者要。

As a nondestructive technique to measure the inner fine structure of the cathode, the ICT has the uniqueadvantage.We discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by Richardson formula and Mullers computational model.

4就当前钡钨阴极发射机理的两个主要理论模型作了自己的探讨，并初探了钡钨阴极中钡的供应机制及发射寿命预测的问题，而且用理查逊公式的推导和Muller计算机模拟法解释了混合基钡钨阴极的优良性能。

To achieve high quantum efficiency and good stability has been a main direction to develop GaAs photocathode recently.

获得高量子效率且稳定性良好的阴极一直是近年来发展GaAs光电阴极的重要方向。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。